Finding the Fourth Proportional to 129,622.44, 194,437.80 and 40,876.74
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Solution
The fourth proportional to 129,622.44, 194,437.80 and 40,876.74 is: 61,316.42
Step by Step Solution
- Step 1: Write the proportion equation
129,622.44 : 194,437.80 = 40,876.74 : x - Step 2: Convert to fraction form
129,622.44/194,437.80 = 40,876.74/x - Step 3: Cross multiply
129,622.44x = 194,437.80 × 40,876.74 - Step 4: Simplify right side
129,622.44x = 7,947,983,396.77 - Step 5: Solve for x
x = 7,947,983,396.77/129,622.44 - Step 6: Final answer
x = 61,316.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.